Die



April 19, 1927.. i G. L. MILLER 1,625,131

DIE

FiledA aan. 2e. 1924 l 6 HUI Xv\ /Ll 9 z3 fla IN/fammi! u j? gwomtoz attouuqt Patented api; 19, i927. 1,625,131

UNITED emr-es lPartnr orifice.

GEORGE LEE MILLER, OF CANTON, OHIO, ASSIGNOR, BY MESNE ASSIGNMENTS, TO 'II-IE TIMKEN ROLLER BEARING COMPANY, 'OF CANTON, OHIO, A CORPORATION OF OHIO.

yDIE.

Application led January 26, 1924. 'Serial No. 688,699.

This inventionV relates to dies and the pertains, is designed to clrainfer or bevel the objects of the invention are to provide an inner' edges of all of the these ribs of the expansible die for vbeveling or chamfering cage in a single operation. This die conrthe inner edges of the ribs of roller bearing prises a plurality of segments indicated gencages to conform to the contour of the erally at 6, forming a conical annnlus. so rollers. Each segment is provided upon its outer Roller bearing cages of the 4general type side with 'the central, inclined portieri 7 conreferred to, are commonly stamped from forming to the taper of the cage and with sheet metal and formed with longitudinal the notches 8 at either side of `said inclined 10 slots to accommodate the rollers. portion, said notches forming annular 65 t is preferable to bevel or chamfer the grooves entirely around the die to receive inner edges of the ribs between said slots, to 1 the annular' coil springs 9. accommodate the rollers. This is ordinarily rlhe vertical edges of the inclined portions accomplished by a very tedious methodL 7 of the segments are beveled or chamfered which requires a separate operation for each as at 10, conforming to the bevel 5 which it 70 slot in the cage and which results in conis desired to form upon the inner edges of siderable waste of material as well as time. the ribs of the cage.

The present invention contemplates the The inner face of each segment is inclined provision of an eXpansible die arranged to as at 11, forming a conical socket to receive bevel or chainfer the inner edges of all of the conical plunger 12 which is slidably 75 the ribs of a cage in a single operation, the mounted therein. As shown in the drawdie being so constructed that the cage may ings, the plurality of segments, correspondbe easily and quickly centered thereon and ing in number to the slots in the cage, are finished in a single operation, without danheld together by the annular coil springs 9.

ger of spoiling the cage 1n the beveling or In operating the device to chamfer or 80 chamfering operation. bevel the edges of the cage, the above de- An embodiment` of the invention is illusscribed die is placed within the cage, the trated in the accompanying drawing, in segments registering with the slots therein. Which- The cage and die in this position, are then Figure 1 is a vertical section through the placed within the frusto-conical socket 13 in 85 improved die, showing the same in the opthe die block 14, which is supported upon erative position; the table or bed 15 as by the bolster block 16. Fig. 2, a side elevation of the expansible The ram 17 of the press is then operated, die; engaging the upper end of the conical plun- Fig. 3, a section on the line 3-3, Fig. 2; ger 12 and forcing the same downward 90 Fig. 4, an enlarged fragmentary sectional through the die, expanding the segments, view through a portion of a cage before the forcing the beveled portion 7 of each segedges are beveled or chamfered; and ment into the adjacent slot in the cage, Fig. 5, a similar view after the beveling chamfering or beveling the edges of the ribs or chamfering operation. as shown at 5. 95

Similar numerals refer to similar parts From the above, it Will be seen that the throughout the drawing. inner edges of all ribs in each cage, are A roller bearing cage of the type adapted beveled or chamfered in a single operation.

to be operated upon by the improved die is It will also be seen that the cage may be indicated generally at 1. This cage is genquickly and easily centered upon the eX- 10o erallyA- frusto-conical in form to accompansible die, the tapered portion of each modate taper rollers and may be provided segment entering the adjacent slot of the at one end with the annuar flange 2. cage and as the segments are only held to- Longitudinal slots 3 are formed in the gether by the annular springs 9, each segcage to receive the rollers, these slots being ment may move independently of the others 105 separated by narrow ribs 4. Itis found deto adjust itself to any irregularity in the sirable to chamfer or bevel the inner edges cage, thus assuring the proper beveling or of these ribs as at 5 to conform to the curvachamfering of all of the edges. ture of the rollers. The improved die not only provides for The expansible die to which the invention a considerable saving in time and labor in the beveling or chenrlering of the edges of the ribs, butJ also eliminates the considerable Weste of materiel which oeeurs in the method of lieveling these edges now in general use.

l. The lnethod oil lieveling the edges of the ribs of e slotted roller bearing cage, which consists in placing the cage over un expansible die having beveled portions registering with the slots in the cage und expanding seid die to bevel the edges of all of said ribs in n single operation by forcing the beveled portions of the die into the slots of the coge.

2. The method ot lieveling the edges of the ribs of :L slotted roller bearing cage, which consists in placing the cage over an expensible die having beveled portions reg- Lemmi.

istering with the slots in the cage, placing the enge in e hollow die and expanding the expansible die to bevel the edges of :lll of seid ribs in :t single operation by forcing the beveled portions ot the die into the Slots ot the onge.

8. The method of lieveling the edges of the ribs olE e slotted roller bearing cage, which consists in placing the enige over an expansible die having L plurality ot independently movable, beveled segments registering with the slots in e Cage, :1nd expanding said die to bevel the edges of all oi' said ribs in :i single operation by 'forcing the beveled portions ot' the die into the slots oilI the cage.

ln testimony thet- I claim the above, I have hereunto subscribed my name.

GE ORGE LEE MILLER. 

